Don't forget this one: http://www.economist.com/blogs/dailychart/2011/08/americas-fiscal-union http://www.economist.com/blogs/dailychart/2011/08/americas-f...

Don't forget this one: http://www.economist.com/blogs/dailychart/2011/08/americas-fiscal-union http://www.economist.com/blogs/dailychart/2011/08/americas-f... Honestly, all these (with the exception of Alaska) come down to population density. In the US, it's not North versus South, it's urban versus rural, as far as demographic divides go.